PHP 8.0 installation using composer

[bonakor]

Describe the bug When I'm running composer install on a PHP 8 installation, Composer won't process because the extension requires PHP to go from 5.6 to 7.

To Reproduce Steps to reproduce the behavior:

1. Install PHP 8
2. Run composer install

Error is this: `Problem 1

• Root composer.json requires sybrew/the-seo-framework-extension-manager ^2.5.2 -> satisfiable by sybrew/the-seo-framework-extension-manager[2.5.2].
• sybrew/the-seo-framework-extension-manager 2.5.2 requires php ^5.6 || ^7.0 -> your php version (8.0.10) does not satisfy that requirement.`

[sybrew]

Thanks for opening this issue.

I just changed the composer.json file to support all PHP versions TSF supports. Please note that Packagist is not aware of this change because it requires a tag/release to take effect. So, you may need to override that issue manually until I release a formal update.